When you need to read a file you typically read a chunk of bytes called "buffer" to avoid multiple calls to the underlying I/O layer, so instead of reading directly from the disk, you read from the previous filled buffer. Doing this you win performance.

This library allows you to read files without worry about the buffers. There are two ways to read the files. The first can only read binary data and has a pointer to move along the file (seek, skip, read). The second performs a read from the beginning to the end of the file and emits different events (byte, character, line, buffer...).